diff --git a/proxy/freedom/freedom.go b/proxy/freedom/freedom.go
index 93b44a73f..b6058f0aa 100644
--- a/proxy/freedom/freedom.go
+++ b/proxy/freedom/freedom.go
@@ -59,8 +59,7 @@ func (this *FreedomConnection) Dispatch(firstPacket v2net.Packet, ray ray.Outbou
 		defer readMutex.Unlock()
 		defer close(output)
 
-		var reader io.Reader
-		reader = conn
+		var reader io.Reader = conn
 
 		if firstPacket.Destination().IsUDP() {
 			reader = v2net.NewTimeOutReader(16 /* seconds */, conn)
diff --git a/proxy/http/http_test.go b/proxy/http/http_test.go
index 4f4930d8c..98cddc823 100644
--- a/proxy/http/http_test.go
+++ b/proxy/http/http_test.go
@@ -9,7 +9,7 @@ import (
 )
 
 func TestHopByHopHeadersStrip(t *testing.T) {
-	var rawRequest = `GET /pkg/net/http/ HTTP/1.1
+	rawRequest := `GET /pkg/net/http/ HTTP/1.1
 Host: golang.org
 Connection: keep-alive,Foo, Bar
 Foo: foo
diff --git a/proxy/vmess/inbound/inbound.go b/proxy/vmess/inbound/inbound.go
index 6ef0d86b3..81775ee06 100644
--- a/proxy/vmess/inbound/inbound.go
+++ b/proxy/vmess/inbound/inbound.go
@@ -127,8 +127,7 @@ func (this *VMessInboundHandler) HandleConnection(connection *hub.TCPConn) {
 		data.Release()
 		responseWriter.Write(buffer.Value)
 		go func(finish *sync.Mutex) {
-			var writer v2io.Writer
-			writer = v2io.NewAdaptiveWriter(responseWriter)
+			var writer v2io.Writer = v2io.NewAdaptiveWriter(responseWriter)
 			if request.IsChunkStream() {
 				writer = vmessio.NewAuthChunkWriter(writer)
 			}
diff --git a/proxy/vmess/outbound/outbound.go b/proxy/vmess/outbound/outbound.go
index f4a469d13..9ae7629fc 100644
--- a/proxy/vmess/outbound/outbound.go
+++ b/proxy/vmess/outbound/outbound.go
@@ -140,8 +140,7 @@ func (this *VMessOutboundHandler) handleRequest(conn net.Conn, request *protocol
 	}
 
 	if moreChunks {
-		var streamWriter v2io.Writer
-		streamWriter = v2io.NewAdaptiveWriter(encryptRequestWriter)
+		var streamWriter v2io.Writer = v2io.NewAdaptiveWriter(encryptRequestWriter)
 		if request.IsChunkStream() {
 			streamWriter = vmessio.NewAuthChunkWriter(streamWriter)
 		}